Furnace-door.



PATENTED JUNE 13, 1905.

G. DINKEL.

PURNACE DOOR.

APPLIoATIoN FILED Nov. z5. 1904.

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PATENTED JUNE 13, 1905.

G. DINKEL. FURNACE DOOR.

APPLICATION FILED Nov.25. 1904.

2 SHEETS-SHEET 2.

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UNITED STATES Patented June 1 3, 1905.

PATENT OFFICE.'

FURNACE-DOOR.

SPECIFICATION forming part of Letters Patent No. 792,321, dated J une13, 1905.

Application filed November 25, 1904. Serial No. 234,183.

To (all whom it may concern.-

Be it known that I, GEORGE D1NKEL,aciti zen of the United States,residing in Jersey City, Hudson county, and State of New Jersey, haveinvented certain new and useful Improvements in Furnace-Doors, of whichthe following is a specification, sufficient to enable others skilled inthe art to which the invention appertains to make and use the same.

My invention relates to means for supporting linings on the inside offurnace-doors; and it consists in the construction and arrangement ofparts hereinafter described and claimed specifically, the distinguishingfeature being the supporting or shelving of the lining loosely upon thedoor by means of laterally-projecting horizontal bearings or arms uponthe lining, which rest upon horizontal shelves on the door, saidhorizontal shelves or rests being provided for the support of the loweras well as the upper portion of the lining and being formed withvertical fianges, which retain the bearing-arms of the lining inposition upon the said supporting-shelves, as hereinafter set forth, incontradistinction to the method of suspending or hanging the lining uponthe door from the upper portion of the latter.

In the drawings, Figure lis a front elevation of a furnace-doorembodying my invention; Fig. 2, a rear view of the same; Fig. 3, a rearview of the same without the lining; Fig. 4, an elevation of the backside of the lining; Fig. 5, a top view of the lining; Fig. 6, a top viewof the door and lining; Fig. 7, a horizontal section upon plane of line7 7 Fig. I; Fig. 8, a vertical section upon plane of line 8 8, Fig. l;Fig. 9, a vertical section upon plane of line 9 9, Fig. l; Fig. 10, asection upon plane of line 9 9, Fig. l, the lining being omitted. Fig.11 is an end view of the lining. Fig. l2 is an isometrical perspectiveof the door without the lining. Fig. I3 is an isometrical view of therear side of the lining.

D represents a furnace-door, of any ordinary or well-known form,provided with a perforated screen or lining L. Upon the inner side ofthe door D, I form a series of horizontal supporting-shelves d CZ, twopreferably at or above and two below the central portion of the door,and provide each shelf with a vertical retaining-ange d, projectingabove its bearingsurface, as will be seen clearly by reference to Figs.8, 9, and 10. Upon the opposed side of the lining L, I form acorresponding series of horizontal bearings or arms l, which extendlaterally from lugs Z', projecting from the body of the lining L. Thesehorizontal arms or bearings Z are adapted to rest loosely upon thehorizontal shelves CZ d', being retained thereon by the flanges Z lagainst lateral displacement, so that the lining is held in position byits own weight, although easily removed or replaced by liftingsufficientl y to clear said retaining-flanges Z CZ. It Will be notedthat the arms Zon opposite sides of the lining project in oppositedirections toward the adjoining vertical edges of the lining, so thatthe lugs l', being situated between the shelves cZ, practically lock thelining in position against accidental displacement horizontally. Thelining is thus not only supported vertically but also laterally, theplay or degree of looseness between the parts being` suficient to allowthe lining to expand or contract longitudinally or in any otherdirection without any resistance other than that afforded by the slightfrictional contact of the parts, which is insuficient to interfere withthe freedom of the lining in adapting itself to different temperatures.The form and integrity of the lining is thus not only preserved andmaintained for a long period of use, but an old lining may be readilyremoved and a new one substituted Without difficulty 0r delay, since itis only necessary to raise the lining in either case sufficiently toadmit of its bearing-shoulders l clearing the retainingshoulders d onthe door.

l/Vhatl claim as my invention, and desire to secure by Letters Patent,is-

l. The combination of a furnace door formed on its inner side with aplurality of horizontal shelves each formed with a verticalretaining-flange projecting above its supporting-surface, and a shieldor lining formed with a plurality of lugs having laterally-extendinghorizontal bearing-arrns arranged t0 the bearing-surfaces of the saidflanged shelvesv upon the door for the purpose set forth.

3. The combination of a furnace f door formed on its inner side With aplurality of horizontal shelves on opposite sides of its center, eachshell formed with a vertical retaining-flange projecting' above itssupporting-surface, and ashield or lining formed with apl'urality oflugs arranged to lit in between the said shelves on opposite sides ofthe center of the door andy having laterally-extending horizontalbearing-arms for engagement with the supporting-surfaces on the saidflanged shelves upon the door 'for' the purpose described.

4. A furnace-door formed on its inner side with two sets of horizontalshelves one above the other, members of each set being on opposite'sides of the center of the door, and each sheltl being formed with aVertical retaining-flange projecting above its supporting-surface, incombination with a shield or lining formed with a plurality of lugsarranged to lit in between the shelves on opposite sides of the centerof the door, said lugs being formed" With laterally-extending horizontalbearing-arms for engagement with the supporting-surfaces on the saidvflanged shelves on the door for the purpose set forth.

GEGRGE DINKEL. Witnesses:

D. WV. GARDNER, GEO. WM. MIATT.

